The JackSepticEye skin is one of the 66 currently available skins in Slither.io. It used to be only accessible if you shared the game on Facebook or Twitter or ran setSkin(snake,27).
It is the only skin with one_eye enabled, as well as the only skin with swell not equal to 0 (it's 0.06). Because of its one_eye property, it cannot have cosmetics.
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